No. 10 (2022)

Published: 2022-12-31

Preface

Editorial

Lkhasuren Jargalsaikhan

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Articles

Copper extraction from the sulphation-roasted copper technogen concentrate

Shirchinnamjil Nyamdelger, Tumen-Ulzii Narangarav, Davaadorj Nemekhbayar, Purevsuren Sarantsetseg, Enkhtuul Surenjav, Gunchin Burmaa, Silam Alen, Tumendelger Azzaya, Byambasuren Khulan, Erdenebat Ulziibadrakh

1-9
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Biological activity and toxicity of extracts from Artemisia sieversiana Willd

Amarbayasgalan Altantuul, Janchivmaa Dorjbat, Baatarkhuu Amarjargal, Bazarvaani Nasantogtokh, Purevsuren Sarantsetseg, Tuvaanjav Suvdmaa

10-26
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Optimization of the polysaccharide extraction process from natural raw materials

Damdindorj Mungunnaran, Lodonjav Munkhgerel, Munkhjargal Odonchimeg, Duger Regdel, Erdenechimeg Namjil

17-23
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Hydrogeochemical study of hot springs in western region of Mongolia

Chimeddorj Bolormaa, Dolgorjav Oyuntsetseg, Oyuntsetseg Bolormaa

24-33
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Excess chemical potentials for hard atomic and diatomic solutes dissolved in hard-diatomic fluid

Tsednee Banzragch, Tsednee Tsogtbayar, Khinayat Tsookhuu

34-39
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Hydrochemical study of the wells water in Dornogobi province

Amarjargal Ichinnorov, Gombosuren Odontuya, Ganpurev Dulamsuren, Zolboot Buyanjargal, Battulga Dariimaa, Otgonbayar Khureldavaa, Andarai Tsiiregzen, Dolgorjav Oyuntsetseg

40-47
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The results of the research on determining the optimal values of the parameters for brown coal gasification process

Avirmed Tumenbayar, Budeebazar Avid, Bold Tungalagtamir, Choidorj Dashpuntsag

48-57
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The study of adsorption activity of chromium ion (Cr(VI)) in chitosan based new materials

Majigsuren Enkhtuya, Shirendev Nasanjargal, Byambasuren Ulziidelger, Yunden Ganchimeg

58-64
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Possibility of reducing water hardness with biochar derived from waste biomass

Chuluun Buyan, Bayartsengel Bayarjargal

65-74
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Investigation of [2+2] photodimerization of trans-4-(trifluoromethyl) cinnamic acid

Ulambayar Bayasgalan, Bariashir Chantsalnyam, Uranbileg Nergui, Batchuluun Khongorzul, Lkhasuren Jargalsaikhan, Jav Davaasambuu

75-79
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The feasibility of copper dissolution from the molybdenite concentrate with iron chlorides

Tumen-Ulzii Narangarav, Gunchin Burmaa

80-87
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Morphological changes in human scalp hair during treatment by hair products containing copper and zinc enriched yeast hydrosylate

Buyant Minjmaa, Tsoggerel Ariunsaikhan, Munkhuu Bayarjargal, Oyuntsetseg Bolormaa, Baltsukh Oyuntuya, Erdenebat Uranchimeg

88-92
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The study on the possibility to use waste glass in concrete

Dashdondog Oyunbileg, Tsegmid Batbaatar

93-99
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Synthesis of nanocomposite materials with montmorillonite and multiwalled carbon nanotubes

Luvsandagva Mandakhsaikhan, Dolgormaa Anudari, Ochirkhuyag Altantuya, Gendenjamts Oyun-Erdene

100-106
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Comparative study of technology and results of immunoglobulin extraction from placental blood serum and donor blood plasma

Janchivmaa Dorjbat, Bayasgalan Sanchimeg, Nergui Zoljargal, Batchuluun Enkhdelger, Bayaraa Nomin, Gantulga Anujin, Davaadulam Nandintsetseg, Erdenechimeg Uranzaya, Batmunkh Zolboo, Amarbayasgalan Altantuul, Enkhbat Yesukhei, Bonduush Ichinkhorloo

107-111
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Possibility of obtaining a porous silica material from Khongor-ovoo kaolinite by mechanochemical activation

Bayarzul Uyat, Darkhijav Burenkhangai, Oyun-Erdene Gendenjamts, Batchimeg Ganbaatar, Jadambaa Temuujin

112-116
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Drinking water quality, composition in the southwestern region of Tuv province

Tsogbayar Erdenetsetseg, Badrakh Renchinbud, Batsukh Saranchimeg, Zorigt Byambasuren, Dashdondog Gerelt-Od, Choijilsuren Jawzan

117-124
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Developing the manufacturer pharmacopoeia article of the wound treatment gel “The Fomitop”

Shinen Narmandakh, Byamba Davaadulam, Gansukh Khulan, Erdenechimeg Sumyabazar, Yshen Li

125-130
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Food Safety: The contamination of persistent organic pollutants in some food products

Bayarmaa Barkhuu, Munkhjargal Odonchimeg, Erdenechimeg Namjil, Damdindorj Mungunnaran, Enkhtuul Surenjav

131-139
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The importance and the role of chemical language: A study of the content of chemical language in secondary school

Norovsuren Banzragch, Jargalsaikhan Byambaa

140-146
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Results of rubric-based evaluation of 5e lesson planning

Bat-Unench Batchimeg, Choijilsuren Nyamgerel

147-152
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